<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <meta http-equiv="X-UA-Compatible" content="ie=edge" />
        <link rel="stylesheet" href="./index.css" />
        <title>Demo</title>
    </head>
    <body>
        <div class="btns-cover">
            <button id="animation">开启动画</button>
        </div>
        <canvas id="canvas">你的浏览器不支持canvas</canvas>
        <canvas id="bg"></canvas>

        <script src="./index.js"></script>
    </body>
</html>
